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Finding the Fourth Proportional to 93,119.52, 128,507.64 and 50,680.80

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Solution

The fourth proportional to 93,119.52, 128,507.64 and 50,680.80 is: 69,940.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,119.52 : 128,507.64 = 50,680.80 : x
  2. Step 2: Convert to fraction form
    93,119.52/128,507.64 = 50,680.80/x
  3. Step 3: Cross multiply
    93,119.52x = 128,507.64 × 50,680.80
  4. Step 4: Simplify right side
    93,119.52x = 6,512,870,001.31
  5. Step 5: Solve for x
    x = 6,512,870,001.31/93,119.52
  6. Step 6: Final answer
    x = 69,940.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.